Press them into the base of the prepared tin. Put the base in the fridge while you prepare the topping. Whisk the cream cheese and add the icing sugar and brandy. Fold in the whipped cream.
When you just don't have the energy to mess about with baking, an easy cheesecake is a make-ahead wonder. You can swap ... bottomed tin. Chill in the refrigerator while you make the topping.
Spoon the biscuit base into the prepared tin and use the back of a spoon to smooth it flat. Put the tin into the fridge to chill while you make the topping ... the top of the cheesecake.